Mud and scale receptacle for steam-boilers



No. 615,549. Patented Dc. 6,1898. B. HASKELL.

MUD AND SCALE RECEPTAGLE FOR STEAM BOILERS.

(Application fixed June 1, 1898.)

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No. 615,549. Patented Dec.-6, I898, B. HASKELL. MUD AND SCALE BECEPTAGLEFOR STEAM BOILERS.

(Application filed June 1, 1898.) r

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Nrrnn STATES PATENT Fries.

BRODERICK HASKELL, OF GRAND RAPIDS, MICHIGAN.

SPECIFICATION forming part of Letters Patent NO. 615,549, dated December6, 1898.

Application filed June 1, 1898. Serial No. 682,284. (No model.)

To ctZZ whom it may concern.-

Be it known that I, BRODERIOK HASKELL, of Grand Rapids, in the county ofKent and State of Michigan, have invented a certain new and usefulImprovement in Mud and Scale Receptacles for Steam-Boilers, of whichimprovement the following is a specification.

My invention relates to means for collecting and discharging mud, scale,and other solid matter deposited from Water evaporated in steam-boilers;and its object is to provide a device of such general class which shallbe simple, inexpensive, and readily attachable to the shell of asteam-boiler, particularly one of the locomotive type, withoutsubstantial projection therefrom or interference with adj acentmechanism,and. by which the deposited matter may be collected at a pointwhere it will not be afiected by heat from the tubes or fire-box and bestored until it can be conveniently and expeditiously washed out.

The improvement claimed is hereinafter fully set forth.

The leading and essential feature of my invention consists in a chamberor receptacle of lune or crescent shaped transverse section which isconnected to the lower portion of the shell or waist of a steam-boiler,extending from the throat-sheet or front of the fire-boX for a greateror less distance along the bottom of the boiler. The receptaclecommunicates with the interior of the boiler by a number of transverseopenings or passages in the shell and is provided at or near its frontand rear ends with openings closed by removable caps or plugs, throughwhich the interior of the boiler and receptacle may be examined andthoroughly Washed out Whenever necessary or desirable. The receptaclemay be stayed to resist outward pressure and a reinforcing-sheetconnected to the sheet or sheets of the boiler in which thecommunicating passages are formed in order to insure ample strength andsafety.

In the accompanying drawings, Figure 1 is a vertical longitudinalcentral section through a locomotive-boiler, illustrating an applicationof my invention; Fig. 2, ahorizontal section with the tubes removed; andFigs. 3 and 4:, transverse sections, on an enlarged scale, at the lines:20 a: and y y, respectively, of Fig. 1.

In the practice of my invention, which is herein exemplified as appliedto a locomotiveboiler of one of the present standard types, I connect tothe lower portion of the shell or waist l of the boiler and to thethroat-sheet 2 a mud and scale chamber or receptacle 3, which is formedof a sheet of steel or other met-a1 bent into the form of a trough orchannel with side flanges, substantially as shown in transverse sectionin Fig. 4, and connected to the boiler-sheets by riveting in theordinary manner. The chamber being bounded at top by portions of thewaist-sheets, its internal transverse section at all points has thefigure of a lune or crescent, and it will be seen that considerablecapacity is aiforded in it without material projection below the bottomof the boiler and that it is conveniently accessible and not in positionto interfere with the ordinary disposition of working parts. An opening4 is formed in the receptacle near its connection with the throat-sheetand is closed bya removable cap or cover 5, and an opening 6 is formedin its front end which may be closed either by a cap or by a screwplug,as preferred.

The mud and scale receptacle communicates at difierent points throughoutits length with the interior of the boiler by transverse openings orpassages 7 which are formed in the sheets of the waist of the boiler,and are preferably, as shown, of oblong form and extend nearly orentirely across the top of the chamber. The same result might beattained, though less perfectly, by transverse rows of perforations oropenings, two or more in each row. The communicating passages 7 arelocated at such intervals as may be deemed desirable and as closely asmay be in order to afford ample avenues of discharge for solid matterfrom the space below the boiler-tubes 8 into the receptacle 3.

In order to insure the sufficient and safe resistance of the receptacle3 to the internal pressure to which it is subjected when the boiler isunder steam, it maybe connected on its longitudinal center line to theshell of the boiler by a row of vertical stays 9, passing through theboiler-sheets between the passages 7, the ends of which stays may besecured to the boiler-sheets and to the receptacle by being screwed inand riveted over in the manner of firebox stay-bolts. The recepdened soas to adhere to the receptacle.

tacle may be further strengthened by trans verse stays 10, secured attheir ends to the receptacle below the uncut portions of theboiler-sheets,so as to be clear of the passages 7 To compensate for thereduction of strength of the boiler-sheets due to the cutting out ofmetal to form the communicating passages '7, a reinforcing-sheet 11 maybe riveted to each sheet of the shell containing said passages.

In the operation of the device the solid matter which is separated fromthe water passes freely through the passages in the shell and collectsin the receptacle, where it can be allowed to remain without detrimentuntil it is found convenient to remove it, as it is not exposed to heatand is not, therefore, l ipailre necessity of frequent washing out ofthe boiler is thus avoided. Upon removing the caps from the openings 4and 6 and introducing a hose into one of them the collected mud andscale can be readily and quickly removed by the application of a streamof water. The inside of the boiler and the tubes can also be examined byholdinga light atone of the openings of the receptacle and making anobservation at the other, and the interior of the boiler can bewashed,when desired,bya stream of water directed into one of thepassages 7. Iclaim as my invention and desire to secure by LettersPatent- 1. The combination, with a steam-boiler,

' 'of a curved sheet secured to the outer side of sages in the lowerportion of its shell, of a curved sheet secured at its sides to theshell below said transverse passages and at one end to the throat-sheet,and openings in said curved sheet adjacent to its ends, each closed by aremovable cap or plug.

3. The combination, with a steam-boiler, of a curved sheet secured tothe outer side of the lower portion of the boiler-shell andformingtherewith a mud and scale receptacle of substantially lune or crescentshaped transverse section, said receptacle having openings near its endsclosed by removable caps, and communicating with the interior of theboiler by a plurality of transverse passages, and vertical staysconnected to the shell between said passages and to the outer curvedsheet.

4. The combination, with a steam-boiler, of a curved sheet secured tothe outer side of the lower portion of the boiler-shell and formingtherewith a mud and scale receptacle of substantially lune or crescentshaped transverse section, said receptacle having openings near its endsclosed by removable caps, and communicating with the interior of theboiler by a plurality of transverse passages, and transverse staysconnected at their ends to the outer curved sheet below the spacesbetween the passages of the shell.

5. The combination, with a steam-boiler having a plurality of transversepassages in the lowerportion of its shell, of acurved sheet secured tothe shell below said transverse passages, openings in said curved sheetadjacent to its ends, each closed by a removable cap or plug, and areinforcing-sheet secured to the shell and having transverse passagesregistering with those of the shell.

BRODERIOK HASKELL.

Witnesses:

E. N. WELLER, XVILLIAM SMITTERs.

